I love to use them also. I like their crispness when used in piecing. I did have trouble one time when I used a batik for the backing and quilted it on my longarm. I just couldn't get the stitches to be nice on the back.
Sometimes, if you have to remove a seam or a line of quilting, it looks like the stitching line will not heal up, but I think it always does after washing.
I LOVE to use batiks with black background fabric. As quiltingshorttime said above, it's like a "treasure chest full of gems".